72 Keysight N9010A EXA Service Guide
Boot Up and Initialization Troubleshooting
Potential Problems During Boot Process
Using an external USB keyboard and mouse you can also access the alignment
history, which can be found in a text file at:
C:\ProgramFiles\Agilent\SignalAnalysis\Physics\AlignmentHistory.txt
You will find the most current alignment information at the bottom of this file.
Look for the failed alignments and troubleshoot the Related Hardware based
on the information provided in Table 2-2 on page 68.
High Band Preamp Path System Gain Algorithm
Measures change in signal level with high band preamp
turned ON and OFF.
Input attenuator set to 30 dB.
(Options P07, P32, P44)
A11 Low Band Switch 4800 MHz calibrator on A16
Reference
A9 and A10 Input attenuators
A15 Front End Controller
High Band Preselector Bypass Path System
Gain Algorithm
A12 YTF Preselector is bypassed and amplitude of
4800 MHz calibrator measured. System gain is then
computed. (Option MPB)
SW1 and SW2, coax
switches and cabling
(Options 503, 507, 513,
526)
or SW4 transfer switch
and cabling
(Options 532, 544)
A15 Front End Controller
4800 MHz calibrator on A16
Reference
A9 and A10 Input attenuators
High Band Preselector Bypass Preamp Path
System Gain Algorithm (Option MPB)
A11 Low Band Switch
SW1, SW2, or SW4
Preselector Bypass
Switches
Burst Carrier Trigger Curve Fit Algorithm
Detects the level of the signal envelope before filtering
at the 22.5 MHz IF, and compares that detected level
against the trigger threshold DC level.
A2 Analog IF
Trigger Interpolation A3 Digital IF
DIF 25 Pulse Stretcher Alignment Algorithm A3 Digital IF
DIF 40 Pulse Stretcher Alignment Algorithm
Adjusts time between trigger and clock signal.
(Option B40)
A3 Digital IF
Table 2-2 Initial Alignments
Alignment Description Most Probable
Hard ware Failure
Related Hard ware
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